Stu,
On my desktop, I have my webcam window and drag the WeatehrCat Floater window over the bottom corner. I occasionally take a screen shot of these overlapped window for Facebook, Twitter, or to email or post elsewhere. A couple of times now I've had questions on how I got the sky conditions image and temp on my webcam image. I got to thinking that might be an interesting html tag to add to WeatherCat. I realize we'd have to upload the various graphics to the web space, but that shouldn't be a problem for most users.
Just a thought,
Steve